#!/bin/bash

# Slackware build script for asap

# Written by B. Watson (urchlay@slackware.uk)

# Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.

# Notes:

# This SlackBuild turned out to be a lot more elaborate and in-depth
# than I expected...

# Do not build asapscan or the java/python/etc stuff: they require
# "cito", because they're written in Ć (not C, C-with-acute-accent,
# *.ci source files) and there's no SBo build for it... and I don't
# think it's worth the trouble of creating one. What I probably
# will do someday is create a cito SlackBuild, then use it to
# build an asap-extras package that uses the same source as this,
# including only the stuff that needs cito.

# Slackware 15.0 has a binary called "asapcat", which is part of
# akonadi. It's utterly unrelated to this asap build!

# Any time vlc or xmms2 updates, this build has to be tested against
# the new version. Currently it's known to work with:
# xmms2-20170827_dedc33d
# vlc-3.0.17.3

cd $(dirname $0) ; CWD=$(pwd)

PRGNAM=asap
VERSION=${VERSION:-5.2.0}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}
PKGTYPE=${PKGTYPE:-tgz}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i586 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
  exit 0
fi

TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find -L .  -perm /111 -a \! -perm 755 -a -exec chmod 755 {} \+ -o \
        \! -perm /111 -a \! -perm 644 -a -exec chmod 644 {} \+

LIBDIR=/usr/lib$LIBDIRSUFFIX
PKGLIBDIR=$PKG/$LIBDIR
PKGBIN=$PKG/usr/bin
PKGMAN1=$PKG/usr/man/man1

# These functions help me follow the DRY principle.
runmake() {
  make CFLAGS="$SLKCFLAGS" V=1 "$@"
}

installbin() {
  mkdir -p "$2"
  install -s -m0755 -oroot -groot "$1" "$2"
}

installfile() {
  mkdir -p "$2"
  install -m0644 -oroot -groot "$1" "$2"
}

installscript() {
  mkdir -p "$2"
  install -m0755 -oroot -groot "$1" "$2"
}

# I got carried away and wrote man pages for everything...
# Note to self: don't forget to "sh mkman.sh" after editing
# any of the man/*.rst files.
mkdir -p $PKGMAN1
for i in $CWD/man/*.1; do
  gzip -9c < $i > $PKGMAN1/$( basename $i ).gz
done

# Always build the standalone converter and library. The lib
# is static (no option to make it dynamic).
# There's a "make install" but it's not doing what I want.
runmake
installbin  asapconv  $PKGBIN
installfile asap.h    $PKG/usr/include
installfile libasap.a $PKGLIBDIR

# mplayer wrapper, for command-line users' convenience.
installscript $CWD/asap-mplayer $PKGBIN

# This tools looks useful.
installscript chksap.pl $PKG/usr/bin

# It has POD that renders as a man page. Clean up the formatting some
# and add a SEE ALSO section like the rest of the man pages have.
sed -i -e 's/^chksap -/chksap.pl -/' \
       -e 's/perl \(chksap\.pl\)/\1/' \
       -e '/^=cut/i=head1 SEE ALSO\n\nB<asap-mplayer>(1), B<asap-sdl>(1), B<asapconv>(1), B<sap2ntsc>(1), B<sap2txt>(1)\n' \
       chksap.pl
pod2man -r$VERSION -s1 -cSlackBuilds.org chksap.pl | \
  gzip -9c > $PKG/usr/man/man1/chksap.pl.1.gz

# Looks useful, but it would need cito (don't have):
#runmake asapscan
#installbin asapscan $PKGBIN

# Standalone player (seems to work, dunno why it's not built by default).
runmake asap-sdl
installbin asap-sdl $PKGBIN

# This builds and seems useful, especially since most SAP files have
# PAL timing and I live in an NTSC country:
gcc $SLKCFLAGS -o sap2ntsc sap2ntsc.c
installbin sap2ntsc $PKGBIN

# This, too:
gcc $SLKCFLAGS -o sap2txt sap2txt.c -lz
installbin sap2txt $PKGBIN

# Now build the plugins.

# moc is part of Slackware, but I'll make it optional anyway,
# in case someone's running a stripped-down Slackware install.
# We need the moc source, and have to ./configure it (but not
# actually build it).
if [ -x /usr/bin/mocp ]; then
  echo "=== building moc plugin"

  MOCVER="${MOCVER:-$( /usr/bin/mocp --version | grep Version | sed 's,.*: ,,' )}"
  tar xvf $CWD/moc-$MOCVER.tar.bz2
  ( cd moc-$MOCVER && ./configure )

  runmake asap-moc MOC_INCLUDE="$(pwd)/moc-$MOCVER"
  installbin libasap_decoder.so $PKGLIBDIR/moc/decoder_plugins
  PLUGINS+=" moc"
fi

# xmms is part of Slackware, but I'll make it optional anyway.
if xmms-config --version &>/dev/null; then
  echo "=== building xmms plugin"

  runmake asap-xmms
  installbin libasap-xmms.so $PKG/"$( xmms-config --input-plugin-dir )"
  PLUGINS+=" xmms"
fi

# xmms2 is SBo, optional.
if pkg-config --exists xmms2-plugin; then
  echo "=== building xmms2 plugin"

  # slight xmms2 API change:
  sed -i 's,XMMS_XFORM_PLUGIN,&_DEFINE,' xmms2/libxmms_asap.c

  runmake asap-xmms2
  installbin libxmms_asap.so $PKGLIBDIR/xmms2
  PLUGINS+=" xmms2"
fi

# vlc is SBo, optional.
if pkg-config --exists vlc-plugin; then
  echo "=== building vlc plugin"

  runmake asap-vlc
  installbin libasap_plugin.so \
    $PKG/$( pkg-config --variable pluginsdir vlc-plugin )/demux
  PLUGINS+=" vlc"

  # doinst and douninst update the VLC plugins cache. only include
  # in the package if they're actually needed.
  mkdir -p $PKG/install
  cat $CWD/doinst.sh   > $PKG/install/doinst.sh
  cat $CWD/douninst.sh > $PKG/install/douninst.sh
fi

PKGDOC=$PKG/usr/doc/$PRGNAM-$VERSION
mkdir -p $PKGDOC/examples
cd $PKGDOC/examples
  unzip -LL $CWD/examples.zip
  chmod 644 *
cd -
cp -a README COPYING $PKGDOC
cat $CWD/$PRGNAM.SlackBuild > $PKGDOC/$PRGNAM.SlackBuild

mkdir -p $PKG/install
sed "s,@PLUGINS@,$PLUGINS," < $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE
